diff options
| author |   Eli Cohen <eli@mellanox.co.il> | 2008-07-14 23:48:53 -0700 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2008-07-14 23:48:53 -0700 |
| commit | f507d28bff0601f1a8a96b7939fa3855c50d25b6 (patch) | |
| tree | cc123185fdd19bac8c6309adeef0e39b47ef9b04 /drivers/infiniband | |
| parent | mlx4_core: Use MOD_STAT_CFG command to get minimal page size (diff) | |
| download | linux-dev-f507d28bff0601f1a8a96b7939fa3855c50d25b6.tar.xz linux-dev-f507d28bff0601f1a8a96b7939fa3855c50d25b6.zip | |
IB/mlx4: Use kzalloc() for new QPs so flags are initialized to 0
Current code uses kmalloc() and then just does a bitwise OR operation on
qp->flags in create_qp_common(), which means that qp->flags may
potentially have some unintended bits set. This patch uses kzalloc()
and avoids further explicit clearing of structure members, which also
shrinks the code:
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-65 (-65)
function old new delta
create_qp_common 2024 1959 -65
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/qp.c | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 91590e7fba0c..89eb6cbe592e 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -454,19 +454,8 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd, spin_lock_init(&qp->rq.lock); qp->state = IB_QPS_RESET; - qp->atomic_rd_en = 0; - qp->resp_depth = 0; - - qp->rq.head = 0; - qp->rq.tail = 0; - qp->sq.head = 0; - qp->sq.tail = 0; - qp->sq_next_wqe = 0; - if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) qp->sq_signal_bits = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); - else - qp->sq_signal_bits = 0; err = set_rq_size(dev, &init_attr->cap, !!pd->uobject, !!init_attr->srq, qp); if (err) @@ -704,7 +693,7 @@ struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, case IB_QPT_UC: case IB_QPT_UD: { - qp = kmalloc(sizeof *qp, GFP_KERNEL); + qp = kzalloc(sizeof *qp, GFP_KERNEL); if (!qp) return ERR_PTR(-ENOMEM); @@ -725,7 +714,7 @@ struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, if (pd->uobject) return ERR_PTR(-EINVAL); - sqp = kmalloc(sizeof *sqp, GFP_KERNEL); + sqp = kzalloc(sizeof *sqp, GFP_KERNEL); if (!sqp) return ERR_PTR(-ENOMEM); |